Advisory Details

June 28th, 2012

Mozilla Firefox AttributeChildRemoved Use-After-Free Remote Code Execution Vulnerability

CVE ID	CVE-2011-3659
CVSS SCORE	7.5, AV:N/AC:L/Au:N/C:P/I:P/A:P
AFFECTED VENDORS	Mozilla
AFFECTED PRODUCTS	Firefox
TREND MICRO CUSTOMER PROTECTION	Trend Micro TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID ['12418']. For further product information on the TippingPoint IPS: http://www.tippingpoint.com
VULNERABILITY DETAILS	This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Mozilla Firefox. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the way Firefox handles nsDOMAttribute child removal. It is possible to remove a child without setting the removed child pointer to NULL, thus leaving it still accessible as a dangling pointer. Subsequent use of this pointer allows for remote code execution.
ADDITIONAL DETAILS	Mozilla has issued an update to correct this vulnerability. More details can be found at: http://www.mozilla.org/security/announce/2012/mfsa2012-04.html
DISCLOSURE TIMELINE	2011-12-01 - Vulnerability reported to vendor 2012-06-28 - Coordinated public release of advisory
CREDIT	regenrecht

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